A densely-planned racetrack with a roundabout, of course! Of course, I couldn’t help adding my urbanist biases to it. You’ll notice that the car selection includes a firetruck and a police car, and all the roads include bike “sharrows.”

AnnArbor.com commenters love to hate on bike lanes, but I’m in love with the plan to fix North Main St. in Ann Arbor. I lived in the study area for 3 years, one year without a car, one year with both car and bike, and one year commuting daily on M-14.